plot
设置plot的pen属性的几种方法，通过画笔可以设置绘制图像的颜色、线宽等参数：
- pen=(255,0,0)
- pen=pg.mkPen(color=‘b’, width=5)
- pen=pg.mkPen({‘color’:‘FF0’, ‘width’: 2})
import sys
import os
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import pyqtgraph as pg
import numpy as np
pg.systemInfo()
data = np.random.normal(size=10000)
f1 = pg.plot(title='波形图1', y=data, pen=(255,0,0))
f1.setBackground('w')
f2 = pg.plot(title='波形图2', y=np.random.normal(size=50), pen=pg.mkPen(color='b', width=5))
f2.setBackground('g')
f3 = pg.plot(title='波形图3', y=np.random.normal(size=500),pen=pg.mkPen({'color':'FF0', 'width': 2}))
f3.setBackground('b')
if __name__ == "__main__":
pg.QtGui.QGuiApplication.exec_()
每个plot绘制的波形图都是一个独立的应用程序窗口：
设置symbolBrush，symbolPen属性：
import sys
import numpy as np
import pyqtgraph as pg
pg.plot(np.random.normal(size=100), pen=(255, 255, 0), symbolBrush=(0, 255, 0), symbolPen=(255, 0, 0))
if __name__ == "__main__":
pg.QtGui.QGuiApplication.exec_()
image
import sys
import numpy as np
import pyqtgraph as pg
pg.image(np.random.normal(size=(500, 500)))
if __name__ == "__main__":
pg.QtGui.QGuiApplication.exec_()
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